63645065 has 8 divisors (see below), whose sum is σ = 83317248. Its totient is φ = 46287280.

The previous prime is 63645047. The next prime is 63645067. The reversal of 63645065 is 56054636.

63645065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63645065 - 2¹⁰ = 63644041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63645067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 578537 + ... + 578646.

It is an arithmetic number, because the mean of its divisors is an integer number (10414656).

Almost surely, 2^63645065 is an apocalyptic number.

It is an amenable number.

63645065 is a deficient number, since it is larger than the sum of its proper divisors (19672183).

63645065 is a wasteful number, since it uses less digits than its factorization.

63645065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157199.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 63645065 is about 7977.7857203613. The cubic root of 63645065 is about 399.2591808980.

The spelling of 63645065 in words is "sixty-three million, six hundred forty-five thousand, sixty-five".